Yesterday I installed the new beta version of Skype for MacOS X. There's a lot of excitement around this new product. I didn't have the opportunity to test it very much. The main problem I have is the lack of audio preferences in the application, which means that if I want to listen a conversation using my USB hearphones, I have to route all the audio of my Mac to the hearphones.

Anyway, it's a beta version, I guess that most issues will be fixed in the next releases. Meanwhile, I'm on Skype :-)